Oil burner



E. GROSSENBACHEII.

OIL BURNER.

APPLICATION FILED JUNE 22., 1921.

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(l ttozneua E. GROSSENBACHER.

OIL BURNER.

APPLICATION FILED IuNE22, I92I.

Patented Allg. 8, 11922. Pf d, ZSHEETS-SHEET 2. 2! v nvantoz Sulfabli FTENT FFEQE.

ERNEST GROSSENSACHER, 0F FAJARDO, IRTO RICO.

OL BURNER.

` Application flied June a2,

To all whom it may concern.'

Be it known that l, EnNnsT GnossnN- BACHER, a citizen of the United States. and resident of Fajardo, Porto Rico, have invented certain new and useful Improvements in Oil Burners, of which the following is a specification.

Mylinvention relates to oil burners and has for its object to provide an improved and simpliiied construction. in which maximum atomization of the oil is secured in a novel and elicient manner and in which the resulting flame is of great intensity and comparatively short in length, thus avoiding any contact with and injury to the lining of the furnace in which the burner is incorporated. Another object of my invention ris to provide a burner constructed in a novel manner so as to be particularly adapted to the use of tar and heavy grades of fuel oil. Other objects of my invention will appear from the description hereinafter and the features of novelty will be pointed out in the appended claims.

In the accompanying drawings, which illustrate an example of my invention without defining its limits, Figure 1 is an elevation, partly in section, of the burner; Fig. 2 is a longitudinal section on the line 2-2 of Fig. 1; Fig. 3 is a cross-section on the line 3--3 of Fig. 2; Fig. 4 is a view similar to Fig. 2 showing another form of burner, and Fig. 5 is an end view thereof.

As shown in Figs. 1, 2 and 3 of the illustrated examples, -the burner comprises'two duplicate and complemental sections 5 and 6 which constitute the body of the burner and are primarily secured together by means of screws or thev like 7. Each section 5 and 6 is formed with extcriorly screw-threaded extensions '8, 9 and 10 which, when fitted together, comprise externally screw-threaded bosses a, 5 and c provided with passages 11, 12 and 13 respectively. Thesey bosses are adapted to accommodate a pipe'bushing 14, an elbow 15 and a pipe cap 16, the illustrated example showing the pipe bushing 14 connected with the boss a', the elbow 15 with the boss b and the pipe cap 16 with the boss 0,' it will be understood that these fittings may be'changed at will with respect to said bosses, only two of them being inv active use at a time and the third being sealed by the cap 16. AIn addition to their other functions', these elements 14, 15 and 16 servealso Specification of Letters Patent.

Patented Aug. 8, 1922.

1921. Serial No. 479,457.

to assist in fastening the sections 5 and 6 together.

As. shownv in Fig. 1 of the drawingsthe interior of the burner converges from the passage 11 toward the exit end of said burner along the lines 17 which constitute, iny part, the interior walls thereof. The sections 5 and 6 are so constructed that, when fitted together, a flat nozzle is formed at 18 which is connected with the passage 11 by means of a passage 19 which, when viewed as in Fig. 2, converges from the passage 11 to the nozzle 18; the latter communicates with relatively narrow slots 20 which, in turn, are connected with the passages 12 and 13 by means of ducts 21 extending transversely to the burner. From the slots 2O a passage 22 diverges throughout a major portionv of its length along lines 23 and then converges, preferably along curved lines 24, toward a second nozzle 25which is also of fiat shape, as shown in Fig. I2, the passage 22, in part 'at least, comprising a mixing chamber in which the oil and steam or other atomizing agent are caused to become mixed. From the' nozzle 25 a passage 26 diverges also throughout a major portion of its lengt-h along lines 27 and then converges, preferably also along curved lines 28, toward a third nozzle 29 which may be similar in character to the preceding nozzles 18 and 25; as illustrated in Fig. 2 the passage 26 is somewhat shorter in axial length than the passage 22. Beyond the third nozzle 29 a passage 30 diverges, preferably along curved lines 31, and then converges along Alines 32 toward the exit or fuel nozzle 33, which constitutes the previously mentioned exit end of the burner. The latter further includes rods 34 and' 35 of rectangular cross-section and extending transversely of the burner, as shown in Fig. 1; these rods 34 and 35 are located respectively in the largest portions of the passages 22 and 26 in close proximity to the nozzles 25and 29 and with the corner 100 edges d and e of the rod 34 facing the nozzles 18 and 25 respectively, and the corner edges f and g thereof spaced from the walls of the passage 22 at approximately the points where the lines 23 and 24 join each other. 105

the walls of the passage 26 at approximately 11,@

the points where the lines 27 and'28 join each other. The rods 34 and 35 Which, in eiiect, comprise baffles or baffle-rods ot lozengeshape in cross-section, may be secured in` position in any suitable manner as, for instance, by havingtheir ends iittedintosuitable recesses formed at the proper points in the Walls 23 of the sections 5 and 6, asy

fitted together, constitute a nozzle v18m10- cated concentrioally Within the extension lla'y and internal-ly screvv-threadedior the accommodation of. a pipe 1.4afWith`a source ot steam orV other atomizin-glv agent. In this term, theoil pipe @y isconne'cted `with the extension 11@-L andy conducts oil to the ducts 21a, which are, formed. about the nozzle *18" and converge/toward a point in iront thereof, es shown in Fig. 5, and communica-te with the passage' 22, which corresponds to the; similarly indicatedpassage of `Fig; 2f; In all other respects thek tornrot burner shown in. Figs. 4 and 5may correspond to: the form showninFigs. 1, 2 and 3, the only. difference being thatv the inletv for the atomizing agentis located' Within theI inlet for.' the flueloilff -1 -Q For the purposeofdescribing the opera.-A tionot'the burner'in both'of'its illustrated torms, it Will be assumed that the burner is connected with sources of fuel oily and atomfi'zing agent in the usual manner, the

` latter, for descriptive purposes, being in.-

topass. throughthe bushing. 14 andi passages 1 1 and-19 to the virst nozzle-18, or through the pipe.14'and nozzle 13, through either of: which itpasses at high velocity, because ofthe dimensions and shapeoty said nozzle,

. intothepassage 22 vand rushes againstthe rodi.134..` Vfl`he-edge dy of the'rlatter cutsthe stream, ofI steam in two and deiectsgthe-two sub-streams against'Y the curved` Walls 24 which divert-said; sub-'streams toward each l other With great` velocity and cause them to 'become` united at such high velocity in registnyWith-the second nozzle 215. Through the latter the steam in a unitedstream passes at` high velocity into; lContact with thejfrod ,-z;l 35a thapedgegd of; Whichagaiin cuts said stream of steam into two parts and deflects the sub-strearns thus formed' into contactl with thel curved Walls 28. These cause said sub-streams toI be again diverted toward each other at high speed and to become again,l united in registry with the third nozzle 29, through which the united stream of steam passes at high `velocity .into thepassa-ge 30 andA through the i'uel nozzle 33 into the furnace. Y

Coincidentally with the above, the oil enytersthrough the elbow 15 and passage 12 into the .ducts 21, from which `it issuesthrough theslots 2O in streams Which meet in tront of the steam vnozzle 18 of..l*`igsf.'1,.2 -and 3 or `through the pipe 15% andducts 21a to a point in front of the nozzle 18@ oitFigs.. 4 and 5. The stream of steam rushing out of either of these nozzles carries: Withr ita hart ot' the oil,'the remainder oft'which tot lows the=interiorwalls of thev burner tothe point dvhere the sub-streams'ot steaml previeusly mentioned cut the oil into a Iinemist. The tWo stream'sro'f the `.mixture vet steam and oil followthecurved Walls 24 inoppositedirections of flow and meet With' iorce at the entrance to .the secondffnozzle 25 through which.' the united sub-streams:V ot lmixed eiland steam-*pass finto'- -the passage 2G.and againstlthe rodfw35. At-this pointl the stream oi' mixture isagain kc'ut in .twoandy delected and the twee' sulstreamsl brought into a head-on collision'at the en:

trance to the third nozzle 29 through which..

the again `united stream passesinto the passage 30' and. out through theburner-nozzle- 33. It will be understood thatfthe in.- divid'ual description-of .the passage of the steamwhich` precedes the description of the passa-geef the mixturerof -oilfand steam 'is f y.

included'i'or the sake: of 'clearness and not' because itisl Vnecessaryto-.first' cause steam or `other atomizing agentV to pass alone. through the burner.v

Dueytfo. the divergent Walls 17. wherebyl the -r burner becomesv relatively@ narrow or. small.

at the steam-inletvend 1l and Wider orlarger atlthe nozzleend 33,;the.l velocity of the steam or Vother atomizingi agent and with` it the-fuely oilravliicli. itv carries, althoughrree y maining high en'ough to" eflicien'tly `vperformitsv` functions as -an atomi'zingfagent', de,. creases sutlicientlyso that' theliame'.atA the uelnozzle 33 exerts no;blov\7torch action burner-.H111 other. yWords,-` a *comparatively short, Widefiamefof great` intensityy isf-pro vided which yis i very. desirable in ythat it pro videsan even and'uniformheat inlthe furinace Without cominginto `contact 'with any,` oi' the Walls thereof, Which vare thus protected againstl injuryfromthis source. f' Witlr thepresentv burnerV the` steam.-o1 other atomizing ,agentiandj the yoil are brought, into such ya completer stateI ot, ad

mixture, that is, the foil isl so thoroughly las isfo

atomized toa ine, easily ignitable mist vby most perfect combustion and most e'liicient heat results are obtained while at the same time `the oil' consumption is reduced to a minimum, ythus making the burner most economical in operation. Because of the manner in whichthe atomiza'tion is accomplished, the burner may be eiiiciently utilized for burning tar and heavy grades or fuel oil. I

Various changesin the 'specific form shown and described maybe made withinv the scope of the claims without.' departing from the spirit of my invention.,

' I claim: 'i 4 1 1'. An oil burner comprising a casing hav- 'nginlets orthe atomizing agentand'oil respectively; and provided with an exitnozzle, said i casing Jfurther having'an interior passage including'a mixing' chamber 'in which the atomizing agent and oil are mixed,` said passage diverging ytoward saidl exit nozzle in one plane and alternately diverging and converging inr directions transverse to said plane, and means in said interior passage whereby the stream of mixed agent and oil is divided into sub-streams and for bringing them together again at high velocity, said mixture being coincidentally spread in approximately fan-shape toward said exit nozzle.

2. An oil burner comprising a casing having inlets for the atomizing agent and oil respectively, and provided with an exit nozzle, said casing further having an interior assage including a mixing chamber in i which the atomizing agent and oil are mixed,

said passage diverging toward said exit nozzle in one plane and alternately diverging and converging in successive steps in directions transverse to said plane, and a plurality of means at spaced. intervals in said passage in close proximity to the converging portions thereof whereby the stream ot mixed agent and oil is alternately divided into sub-streams and brought together again in a single stream, said mixture being coincidentally spread in approximately ranshape toward said exit nozzle.

3. An oil burner comprising a casing having inlets for the atomizing agent and oil respectively and provided with a mixing` chamber in which the atomizing agent and oil are mixed, said chamber having a burner nozzle at its exit end and an interior passage diverging toward the same, a plurality of interior nozzles located at spaced intervals in said passage and means in said passage in advance of said interior nozzles whereby the stream of mixed agent and oil is divided into sub-streams and brought together again in a single stream prior to its passage throu `h each of said nozzles.

4r, oil burner comprising a casing having inlets for" the atomizingagent and-oil respectivelyl and provided with a mixing chamber inwhich the atomizing agent and oil are mixed, a plurality of interior nozzles locatedv at spaced intervals within said casinga andm'eans within said casing in ad vance of said interior nozzles whereby the stream ofy mixed air and oil is divided into sub-streams'and brought together again in a single stream v`prior to its passage .through` each' or' said nozzles.v -f

An' oil burner comprising a easing hav-` ing inlets for they atomizing agent and oil respectively and vprovided with a mixing chamber'in whichthe atomizing agent and oil are mixeda an interior nozzle within said casing connected with said mixing chamber9 and means within said casing in advance or said interior vnozzles whereby the streanr'of mixed vagent Vvand oil is divided into substre'ams andl broughttogether"again in a single stream prior to its passage through said'interior nozzle.

6. ein oil burner comprising acasing havingvan inletnozjzle tor anatomizing` agent and an inlet for -tuell oil leadi.ng"tliereto whereby the oil is conducted into contact with a stream of said agent travelling at high velocity9 an interior nozzle spaced from said inlet nozzle, a battle of lozenge-sha-pe in cross-section locatedin said casing between said inlet and interior nozzles whereby the stream of mixed agent and oil is divided into sub-streams and means co-operating with said ballie to unite said sub-streams into a single stream prior to their passage through said interior nozzle. y

7. in oil burner comprising a casing having an inlet nozzle for an atomizing iagent and an inlet for fuel oil leading thereto whereby the oil is conducted into Contact with a stream of said agent travelling at high velocity, an interior nozzle spaced from said inlet nozzle, a passage leading from said inlet nozzle to said interior nozzle and diverging from said inlet nozzle and converging toward said interior nozzle and a rectangular bar located in said passage in advance ot said interior nozzle whereby the stream of mixed agent and oil is divided into substreains, the converging portion or said passage unit-ing said sub-streams in one stream prior to the passage through said interior nozzle.

8. An oil burner comprising a casing having a steam inlet and a steam nozzle connected therewith and provided with an oi] inlet leading to said steam nozzle and having a fuel exit nozzle, an interior passage in said casing leading :trom said steam nozzle to said exit nozzle and consisting of spaced interior nozzles connected by passage sections which converge toward said interior nozzles, and rods oi' rectangular cross-section projecting across said passage to the v consisting; ofi/complementair sections having sieotions andv having. tvvoy angular edges lo Gated? lin laligii/'inne1`1t"With-, said interior nozzles' and the other twoangular edges spaced fromy the Wallsfof-said passage sections. y

9. Am oilburner comprising, a easing oonsisting' oi'complement'alf sections secured toL getherv in face to face relation and having inlets for an atomizing agent and `oil respectively, said sections 'being provided with yeompleinental. interior eoni'orrnations for-nb ing a mixing ChamberinWliiCh-th'e atomizing, agent and oil are mixed;4 a longitudinal passage and an exitV nozzle, and means-in saidieasingj ijn.A registry With the dividing line between said sections' for dividing` the atomizingfhagent and! oily into"` sub-streams and for bringingl vthein togethen again prior passage tl'iereoef` through. said exit nozzle,` V i 'f '10. An o il burner 'comprising af easing externallyy serevvethreade'df. extensions fitting together, fastening djevi'eesA for fastening said` sections together, a pipe. fttingtted. upon' one pairl of extensions to .provide a steamf` inlet,ranelloovv-fitted` upon the other pain ofextensions to providefan. oil.. inlet, ald. pipe littlng.' and elho'w serving further? o fix said ycasing sections. against Sepa tion', said. easing being provided; ffiirtli'ei with an` exitvnozzleyav plurality of'spaoed; interior nozzles Within said easing conneet'ed with each` other and communicating sa-idinlets and with. saidl exit nozzle and an inlet for' an atomizingwagent(loeated'one Within the other and further' havii'igy a'neiiit nozzle, av plurality of spaced; interior nozf zles y"vvithina saidY easifngf eonneeted" with', each other and.. communicating ',vvithfy said;A linlets ianjd-vvith said'` exit. nozzleY andQbaiHelars With-in said easing( in advaneeof i tenior nozzles. s

nl testimony whereof iialvf Befntoi sa y my hand;`

ERNESTenossiiiwsaennn( 

